USMLE Step 1 – Question of the Week #3

A 25-year- old healthy male participated in a running competition. After finishing running, his heart rate was 140/minute, blood pressure was 136/90 mm Hg, and respiratory rate was 20/minute. Also, he had perspired significantly.

Which of the following changes in renal hemodynamics is not expected due to activation of sympathetic nervous system?

A. Decreased renal plasma flow

B. Decreased hydrostatic pressure in glomerular capillaries

C. Decreased glomerular filtration rate

D. Decreased filtration fraction
E. Decreased hydrostatic pressure in peritubular capillaries